• A new transient fault simulating reappearing system is proposed and developed.

    提出研制了一种新型电力系统暂态故障模拟再现系统

    dict.cnki.net

  • During the voltage recovery period after the extinction of fault arc, the amplitude and phase of transient fault voltage is essentially different from those of permanent fault voltage.

    瞬时性故障发生时短路点电弧熄灭恢复电压阶段,断开各电气量关系永久性故障本质不同

    dict.cnki.net

  • In this method the transient fault signals are analyzed with wavelets transform to obtain the transient fault information, and the fault circuit is selected by the synthetic phase comparison method.

    方法利用变换分析采集的故障信号提取用于选线信息采用综合相位比较法确定故障线路

    dict.cnki.net

  • A new intelligent on-line capturing of the optimal reclosing time of transient fault is presented.

    提出了一种新的智能实时捕捉方法,对瞬时性故障最佳重合闸时间进行捕捉

    dict.cnki.net

  • The different types of fault information are discussed and com-pared in the paper, which indicated that transient fault information and breaker operation information can be used in protection.

    本文论述比较电力系统故障不同类型故障信息指出暂态故障信息电力系统故障断路器动作产生的二次扰动信息可利用的;

    dict.cnki.net

  • Simultaneously, on the base of fault line selection, wavelet packet is used to analyze the transient signal, and to find that is connection with transient fault signal and fault distance.

    同时选线基础通过运用暂态信号进行多层分解发现有些频带的高频信号故障距离成一定的映射关系

    dict.cnki.net

  • On the basis of the introduction of commutation failure principle, analysis of commutation failure in Three Gorges-Guangdong HVDC system Echeng station is made according to the transient fault record.

    简要介绍换相失败基本原理基础上根据现场暂态故障波图,广直流鹅城换流站发生失败原因进行了详细分析

    dict.cnki.net

  • The self-adaptive reclosure, which is aimed to distinguish the transient fault and the permanent fault, can reduce the power loss caused by faults and enhance the stability of power system.

    区分瞬时性永久性故障目的适应重合闸减少故障电能损失增强电网稳定性

    lib.cqvip.com

  • The mathematics and simulation model for transient and fault overvoltage are established and their generation mechanisms, harm and characteristic are analyzed.

    针对试验过程中可能产生的瞬时过电压故障过电压分别建立了数学仿真模型分析了过电压产生机理危害特点

    dict.cnki.net

  • A method of ultra high speed direction relay based on fault transient energy is deseribed in this paper.

    本文提出故障暂态能量基础超高速方向保护的基本原理。

    dict.cnki.net

  • The method deseribed can solve some problems associated with other direction relay based on fault transient signals.

    本文方法解决其它故障暂态方向保护普遍存在一些问题

    dict.cnki.net

  • Moreover, it is the basis of constructing a new non communication protection through absolutely utilizing the fault information which is comprised in transient component of fault current or voltage.

    高压输电线路发生故障暂态电压电流分量包含工频分量更多故障信息,充分利用这一信息构成具有绝对选择性单端通信保护前提

    www.dictall.com

  • Wavelet packets with the advantage of time frequency zoom is used in this paper to decompose the post fault transient electrical quantities by the proper frequency span.

    应用空间具有良好聚焦特性小波,以适当频率带宽,故障暂态气量进行分解

    dict.cnki.net

  • A novel signal processing tool, mathematic morphology (MM), is introduced to improve the performance of fault transient based ultra-high-speed directional relay.

    引入数学形态学提高基于故障暂态超高速线路方向保护动作性能

    dict.cnki.net

  • For the purpose of analyzing the fault transient of the Central China Power System (CCPS), the self-adaptive simulation software of power system whole transient is developed.

    实现华中电网暂态全过程分析研究了基于适应原理电力系统全过程仿真

    dict.cnki.net

  • Shunt reactors can reduce the steady capacitive current but have unobvious effect on fault transient current.

    并联电抗器可以降低线路稳态电容电流故障暂态电容电流作用明显

    www.epae.cn

  • The whole paper comprises three parts: fault transient analysis;

    全文共分为三个部分,第一部分是故障暂态分析

    dict.cnki.net

  • Taking the single-machine infinite-bus system as an example, the transient processes of fault are analyzed:single-phase grounding fault;

    单机无穷大系统分析了系统下列故障暂态过程单相接地短路

    dict.cnki.net

  • This paper gives a brief analysis firstly to fault transient characteristics of non-solid earthed power system, and then presents a novel method to select the fault line.

    在分析了小电流接地系统发生单相接地故障特征基础提出运用连续小波变换分析态零序电流中的高次谐波分量,实现故障选线方法

    dict.cnki.net

  • In the first kind of scheme, the fault transient components of fundamental frequency and third harmonic voltages are calculated respectively.

    第一种形式基波零序电压三次谐波电压分开处理

    dx.doi.org

  • To find an effective method, the strong transient components in the fault currents are considered to utilize.

    为了寻求更为有效的选线方法我们对故障发生时暂态信号分量提供的故障信息加以利用

    dict.cnki.net

  • Simulated experiment in closed-loop shows the system has no marking transient as appearing twice fault and that the redundancy design is rational and reliable, which will get a wide field of aviation.

    系统闭环故障仿真试验研究表明系统二次故障具有无痕切换能力,验证系统设计合理性高可靠性

    www.mct.com.cn

  • Transient signal analysis is the basis of fault detection and transient signal protection in electric power system. wavelet transform provides a cogent math tool for transient signal analysis.

    信号分析电力系统故障诊断保护基础依据小波变换信号分析提供强有力数学工具

    www.websaru.net

  • After the spg fault occurs the transient signal includes plenty of fault characteristics. in latest years the application of wavelets empowers us to be able to study the transient process.

    而系统发生接地故障信号包含有丰富故障特征近年来发展起来分析我们研究信号提供了条件。

    www.websaru.net

  • The study includes fault applying and transient stability controlling.

    试验包括故障系统的暂态稳定控制

    dict.cnki.net

  • The extracted fault characteristics of transient zero sequence current is looked as condition attributes and the multiple of signal enhancement is.

    提取暂态电流故障特征作为条件属性信号增强倍数作为决策属性,构成一个决策系统。

    www.dictall.com

  • In the aspect of fault analysis and transient protection of power system, most of methods are based on analysis of the electric power transient signal.

    并且目前电力系统暂态保护故障分析方法大多基于故障暂态气量分析

    www.fabiao.net

  • In the aspect of fault analysis and transient protection of power system, most of methods are based on analysis of the electric power transient signal.

    并且目前电力系统暂态保护故障分析方法大多基于故障暂态气量分析

    www.fabiao.net

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